A cyclopentapyran that is 1,4a,5,6,7,7a-hexahydrocyclopenta[<ital>c</ital>]pyran substituted at position 1 by a hydroxy group and at positions 4 and 7 by methyl groups (the 4a<stereo>S</stereo>,7<ster
eo>S</stereo>,7a<stereo>R</stereo>-diastereomer) ChEBICHEBI:71494